and ψ.(θ, φ, ψ) is a generic point of Spherical Coordinates more or less and (x, y, z) is the more familiar generic point of Cartesian Coordinates.......
Meat a space I call a Spherical Knot Manifold:
(x, y, z) = τ(θ, φ, ψ, t)(θ, φ, ψ) = (τ(θ, φ, ψ, t)θ, τ(θ, φ, ψ, t)φ, τ(θ, φ, ψ, t)ψ)
where τ(θ, φ, ψ, t) = ∫ v dt
τ is a temporally derived unknown function which converts time-units into space-units, found by integrating the velocity v with respect to the differential of time dt; this idea is standard in Newtonian Mechanics " x = ∫ v dt". τ essentially functions like a spatial radius in a universe which has only a radius of time; τ is also a function of time allowing it to change with time as well as along any spatial angle θ, φ, and ψ.
(θ, φ, ψ) is a generic point of Spherical Coordinates more or less and (x, y, z) is the more familiar generic point of Cartesian Coordinates.
There's no direct way to test for existence apart from our universe. Our instruments won't go where they might be able to discover that information. We're bound to our universe by gravity, just as what's inside a black hole is bound by gravity and so can't get out.
However, there are quantum hints that existence might transcend our universe. Consider the way the uncertainty principle violates the law of the conservation of energy, for events having action less than Planck's reduced constant. That violation may be repaired by the idea that our universe weakly interacts with some sort of elsewhere, with the endless give and take of a buzz of vacuum energy. If that is so, then energy would be perfectly conserved, after all, when our universe and this elsewhere were considered altogether.
That's also the fact that our universe is not infinitely old, but had a beginning about 14 billion years ago. If whatever caused our universe to happen, did happen once, then it might happen again. I certainly don't know of any reason why not.
That doesn't mean we can ever communicate with, let alone travel to, another universe. Those other universes "might as well not exist" from our point of view, except for the way our interaction with them keeps the laws of physics a statistical affair on the finest scales. Still, it is pleasant to think that there might be other universes, maybe with intelligent life in them.
